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Analysis on the Road & Bridge Transition Section of the Uneven Settlement of Penghu Freeway

Author: DengTianQi
Tutor: ZhengMingXin
School: East China Jiaotong University
Course: Geotechnical Engineering
Keywords: freeway transition section settlement observation curve prediction numerical compute
CLC: U416.1
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 0
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Abstract


The transition section between roadbed and bridge is always a weak part in design and construction, In a considerable long period the agreement is not reached on transition section of road use which kinds of transition section of setting method is reasonable, transition section of soft foundation treatment and construction.Based on the (PengHu freeway) transition section of settlement for research object. First, In the analysis of traditional settlement monitoring method, according to the regional geological condition, recommend the settlement observation method of transition section (PengHu freeway) and long-term monitoring. By comparing and multi-angle analyzing the results of in-situ settlement measurement, the settlement development regularities in the transition section were summarized. According to the results of in-situ settlement measurement, analysis of the main impact factors such as soft soil characteristics, the thickness of soft soil foundation, foundation under load, loading rate and filling materials, luqiao transition section of soft foundation treatment and construction, provides the basis.Second, According to the results of various curve fitting method settlement prediction, and analyzing and comparing the advantages and disadvantages of various methods and the scope of this project. Then we find the most suitable subsidence prediction method. Considering the classification load calculation method determine the load rate and stop in time, timely guide construction.Finally By FLAC3D software to simulate the transition section(PengHu freeway) subgrade settlement of the Loading process. With the simulated results and the measured results and the curve fitting results were compared. Further analysis the relationship between the settlement and transition section of bottom wide, slope, packing density and packing of young’s modulus, gives suggestions.

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade
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